I use teamcity to build Sharepoint projects using 64-bit MSBuild. All projects work fine instead of my workflow project. When using Framework 4.0 I get the error message
c:\Windows\Microsoft.NET\Framework64\v4.0.30319\Workflow.Targets(121,5): error MSB4018: The "CompileWorkflowTask" task failed unexpectedly. [V:\Workflows\MyCustomer.WFs.TranslationWorkflow\MyCustomer.WFs.TranslationWorkflow\MyCustomer.WFs.TranslationWorkflow.csproj] c:\Windows\Microsoft.NET\Framework64\v4.0.30319\Workflow.Targets(121,5): error MSB4018: System.IO.DirectoryNotFoundException: Could not find a part of the path 'C:\Windows\system32\config\systemprofile\AppData\Local\Temp\vjwduioy.tmp'. [V:\Workflows\MyCustomer.WFs.TranslationWorkflow\MyCustomer.WFs.TranslationWorkflow\MyCustomer.WFs.TranslationWorkflow.csproj]
I remembered that microsoft got rid of the old Workflow mechanism so I expected that it possibly only works with the older 3.5 framework and built the project with that but got another error:
C:\Program Files (x86)\MSBuild\Microsoft\VisualStudio\v10.0\SharePointTools\Microsoft.VisualStudio.SharePoint.targets(37,45): error MSB4019: The imported project "C:\Windows\Microsoft.NET\Framework64\v3.5\Workflow.Targets" was not found. Confirm that the path in the declaration is correct, and that the file exists on disk.
In Visual studio 2010 building works just fine.
Found a solution: I had to create a folder in 'C:\Windows\system32\config\systemprofile\AppData\Local\Temp\'
This seemed to be a complete TeamCity-issue